docs: def get_pin_tries(self):
          """
          Returns the number of PIN retries left,
          0 PIN authentication blocked. Note that 15 is the highest
          value that will be returned even if remaining tries is higher.
          """
          # Verify without PIN gives number of tries left.
          _, sw = self.send_cmd(INS.VERIFY, 0, PIN, check=None)
          return tries_left(sw, self.version)